Water back for gas stoves



Nov, 17,192s- 1 J. G. SCOTT WATER BACKFOR GAS STOVES Filed June 1, 1921 therein, so as to retain the water a sufficient- Patented Nov. 17, 1925.

UNITED S TA T ES PATENT OFFICE.

JAMES c. SCOTT,

or WASHINGTON, DISTRICT or COLUMBIA, assrenon TO sootr'r ens OF DELAWARE.

WATER'BACK FOR, GAS STOVES.

Application filed June 1, 1921. Serial No. 474,155.

T 0 all whom it may concern:

Be it known that I, J AMES G. Soo'r'r, citizen of the United States,.residing at VVashington, invented certain new and useful Improvements in i Vater Backs for Gas Stoves, of which the following is a specification.

This invention relates to gas stoves, but more particularly to a water-back therefor, and the invention has for its object to provide a device, which when used in connec tion with a ga's-burner or burners, willinsure the quick and efficient heating of water, While utilizing the burner or burners forcookin'g purposes. I

With this object in View, the invention consists of the novel construction of the water-back, and particularly of the construction requiring ing and connections; and of the construct on which provides for preheating the water initially entering the water-back, and for d1- resting the water along a circuitous path ly long time within the water-backt'o insure efiicient heating thereof;- and' the invention consists of the construction of the water-back' so that water heated in one compartment thereof, must pass through the other compartment before leaving the water-back; thus raising the temperature of the entire water-back tothe extent that condensation on the outside of the water-back is prevented.

The invention further consists of a waterback preferably designed for use in connection with gas-burners, the water-back having its underside which receives the flame from the burner, flared outwardly so as to provide a stack efl'ect on the air passing between the burner and the flared portion of the water-back.

The invention consists of certain other novel details of construction, as will be first fully described and afterwards specifically pointed out in the appended claim.

Referring to the accompanying drawing:

Fig. 1 is a view of a multiple water-back, partly in top plan and partly in horizontal section, and

Fig. 2 is a view of the same partly in side elevation and partly in vertical section.

Like numerals of reference indicate the in the District of Columbia, have.

the minimum amount of pip-' same parts, throughout the two figures, in

which 1 indicates a multiple water-back, whichasshown in the drawing, is preferably a single casting, including a flat top or plate-v portion 2, having suitable ribs 3 thereon radiating from the two burner openings 4.

Surroundingsaid burner openings 4, and

depending from the top or plate-portion 2,

are the; annular water receiving chambers 5', I

which chambers are provided with a vertical-annular outer wall 6, a short verticalinner wall 7 anda bottom portion 18 which flares outwardly from the short inner wall 7 to the outer wall 6.

Disposed within the space encompassed by the said two walls 6 and 7 and the flared bottom, is an annularly shaped vertical partition 9 which divides the said space into two water passages 10 and 11; the said partition 9 meeting the outer wall 6 at the point '12 adjacent the water inlet-opening 13, and terminating at the point 14: adjacent a radial partition 15, which lies across the interior of the water back and is positioned approximately .270 degrees from the water inlet-opening 1-3; This construction provides apassage 16*connecting the two main passages 10 and 11, while the passage 11 opens into an enlarged passage 17 which is in communication with a cored passage 18 connecting the two chambers of the multiple water-back. The construction of the waterback chamber which receives the water from the chamber just described, is a duplication thereof, except that the water-outlet opening 19 is in communication with the enlarged chamber 17, as will appear from Fig. 1.

Any suitable means may be provided for hanging or supporting the burner or burners in proper position under the waterback, as for instance, by brackets 20; while it is of course understood that, if desired, only a single water-back in place of a multiple water-back may be employed, while two or more of the multiple water-backs may be connected or cast together whenever required.

Having thus described the several parts of the invention, its operation is as follows:

The multiple Water-back being disposed between the burners and the cooking top waa. v

of a stove, heat passing through the burner openings a and to heat the cooking top, is reflected back upon the fiat top or plate portion 2 of the water-back, thus assisting in heating the entire water-back, while the flame from the burner o1 burners impingin directly against the flaring bottom 8 and the inner vertical wall 7, heats the water within the water-back in the following manner.

The water entering the inlet-opening 13, passes around the outer passage 10 to the passage 16 and is preheated. Its direction of flow is then reversed through the inner aassa e 11 in which aassa e the tem erature of the water is raised. As the Water passes from the first water-back chamber and through the cored passage 18, it is still absorbing heat from the hot top or plateportion 2 and is again heated during its fiow through the outer passage 10 of the adjacent water-back compartment and is finally heated during its reversed flow through the inner passage 11 of the last mentioned compartment and is ultimately delivered through the outlet-opening 19.

It will be seen that the construction of the multiple water-back is such that the water loses none of its absorbed heat during its flow from the water inlet-opening to the water outlet-opening 19, and that water heated in the first water-back chamber of the system is sufliciently hot to prevent condensation on the outside of the second chamber of the system, even though the second burner is not in operation.

What I claim as new and desire to secure by Letters Patent of the United States, is:

A water back for gas stoves of the closed top type adapted and designed to be disposed below and spaced from the closed top of such stoves, comprising a substantial 1y fiat plate having a burner opening dis- .posed therein, spaced annular vertical walls depending from said plate around said burner opening, the inner wall being shorter than the outer wall, a bottom plate inclined outwardly downwardly connecting said vertical walls to form an annular water chamber, said inner and inclined bottom wall serving to produce a stack effect on the air at the burner opening, said outer ver tical wall being provided with an inlet and an outlet water opening disposed materially less than 180 apart, an annular vertical partition connected with the outer side wall between the inlet and outlet openings and extending substantially centrally of the annular water chamber to a point adjacent the outlet opening and a transverse partition connecting the inner and outer walls adjacent to but spaced from the end of the V annular partition, adjacent the outlet opening whereby all water entering the water chamber through the inlet opening must pass in a circuitous course first along the outer side and then along the inner side 01 the annular partition before escaping through the outlet opening and whereby all of the water coming in contact with the inner wall of the water chamber and the portion of the inclined bottom plate adjacentv thereto will be preheated by its passage through the outer passage of the water chamber.

In testimony whereof I affix my signature.

JAMES G. SCOTT. 

